The correct option is A Diamminedichloridoplatinum(II)
According to IUPAC, ligands should be named first, then charge of the metal should be indicated by Roman numerals.
If there are more than one ligand, it should be named alphabetically by ignoring prefixes that denote the number of each type of ligand.
Cations must named before anions.
For the given complex,the correct name will be Diamminedichloridoplatinum(II)